The city of Canterlot is supposed to be the safest, most secure city in Equestria: the seat of the government and the home of the alicorn princesses who rule the sun and moon. But even in this trove of prosperity, crime lurks in the shadows and deadly games are played.

And it is almost time for Zugzwang's game to end. He has laid out an irresistible bait for Phillip Finder and his friends: a biological weapon and a murdered scientist. He has his army ready and waiting to control the streets. He has the Princesses laying obliviously in his trap.

The board is waiting, the pieces are all in place, and his opponent is about to make his final mistake. This is the day everything changes. After all, all it takes is one bad day...

Mature warning for violence, graphic description, dark themes, torture, and rape.

The Phillip Finder series
The Pony in the Gray Trilby
The Everfree Forest Affair
Time Flies
The Blue Moon Brings Death
Letters to a Candymare
The Face in the Darkness
Checkmate
Secret of the Mare Lisa
The Sun Falls
Clockwork
Behind Locked Doors
Siege of Clovenworth
The Silent Fugitive
Curse of the Taverneigh Blue
Mystery on the Mareish Moors
The Grilled Cheese and the Muletese Falcon
Absence of Fear
The Fillydelphia Solution
The Sydneigh Ritual
Endgame